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Acquisitions and Intangible Assets, Net - Schedule of Intangible Assets (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Finite-Lived Intangible Assets [Line Items]
Total assets	$ 61.9	$ 74.9
Other intangible assets	20.4	20.2
Other intangible assets, net	10.2	12.3
Amortization of intangible assets	14.5	12.5	$ 8.7
In-place leases
Finite-Lived Intangible Assets [Line Items]
Amortized intangible assets:	125.0	125.2
Accumulated amortization	(73.8)	(63.4)
Favorable leases
Finite-Lived Intangible Assets [Line Items]
Amortized intangible assets:	29.0	29.0
Accumulated amortization	(18.3)	(15.9)
Other Intangible Assets
Finite-Lived Intangible Assets [Line Items]
Accumulated amortization	$ (10.2)	$ (7.9)

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- Definition

The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method.

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